生物柴油替代物C7酯类与长碳链生物醇类混合燃烧相互作用机理及污染物控制

项目名称： 生物柴油替代物C7酯类与长碳链生物醇类混合燃烧相互作用机理及污染物控制

项目编号： No.51306091

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 能源与动力工程

项目作者： 刘冬

作者单位： 南京理工大学

项目金额： 25万元

中文摘要： 随着化石燃料资源的日趋紧张，生物燃料作为一种具有前景的可再生能源，得到越来越多的关注。本项目利用对冲扩散火焰对生物柴油替代物C7酯类（己酸甲酯、戊酸乙酯）分别与长碳链生物醇类（丁醇、戊醇）的混合燃料燃烧进行研究。采用物理取样和光学诊断相结合的方法：使用气相色谱仪和气质联用仪对取样的燃烧主要产物和稳定中间产物进行在线辨识和定量分析；使用光纤光谱仪和CCD 摄像机对火焰烟黑进行在线检测和浓度重建。构建混合燃料的燃烧反应机理，并利用实验检测的结果对反应机理进行验证和改进。阐明生物柴油替代物酯类和长碳链生物醇类混合燃烧的烟黑生成趋势，揭示不同影响因素下，这类混合燃料燃烧相互作用机理及污染物生成机理，提出污染物控制方法。本研究对此类混合燃料的燃烧及污染物控制具有重要的理论意义和实用价值，为生物柴油与长碳链生物醇类混合燃料的实际使用提供实验和理论指导。

中文关键词： 酯类；长碳链醇类；燃烧；对冲扩散火焰；中间产物

英文摘要： With tightened fossil fuel resources biofuels as a kind of promising renewable energy are obtained more interest. Combustion of mixtures of biodiesel surrogates C7 esters (methyl hexanoate and ethyl pentanoate) and long carbon chain bioalcohols (butanol, pentanol) is studied in this project using opposed-flow diffusion flames. The sampling method and optical diagnostics are used, i.e., combustion major species and stable intermediates are sampled, on-line identified and quantified using gas chromatography (GC) and GC-mass spectrometry (MS). The flame soot is dectected and soot volume fractions are reconstructed using an optical fiber spectrometer and CCD cameras. Chemical kinetic mechanisms for the combustion of fuel mixtures are developed. The mechanisums are validated and improved using experimental results. The sooting tendency for the combustion of mixtures of biodiesel surrogates esters and long carbon chain bioalcohols is given, and combustion interactive mechanisms and pollutants formation mechanisms are revealed under different conditions. The control methods for the pollutants formations are proposed. This study has important theoretical meanings and practical values for the combustion of mixtures of biodiesel surrogates and bioalcohols, and also provides experimental and theoretical guidance for the p

英文关键词： Esters；Longcarbon chain bioalcohols；Combustion；Opposed-flow diffusion flames；Intermediate species